3M™ 4508 is a high-density, closed-cell vinyl foam tape designed for sealing, cushioning, and vibration dampening applications. It features 3M™ Adhesive 430, a medium-soft acrylic adhesive that provides good quick stick along with excellent aging and UV resistance.
Its closed-cell structure helps seal out dust, light, and moisture when compressed, while maintaining flexibility under temperature changes and environmental exposure. It is commonly used in appliances, electronics, and transportation equipment for reliable sealing performance.